Companies are not ingenious, it's the people in them that are.

Failure is so much more interesting because you learn from it. That's what we should be teaching children at school, that being successful the first time, there's nothing in it. There's no interest, you learn nothing actually.

I want entrepreneurs to be engineers and scientists and designers; they don't necessarily have to be Internet entrepreneurs or retail entrepreneurs.

You need a stubborn belief in an idea in order to see it realised.

Hire inexperience. This year we plan to hire 200 engineers - half of whom are recent grads. Young people are not burdened by years of experience. They haven't learned - or been told - what is right or wrong. With engineering, there is no tried and tested path. You try, and fail, and fix, and fail again.

I was frustrated as a child when I had to use a vacuum. It had a screaming noise and the smell of stale dog and a lack of performance.

We’re taught to do things the right way. But if you want to discover something that other people haven’t, you need to do things the wrong way. Initiate a failure by doing something that’s very silly, unthinkable, naughty, dangerous. Watching why that fails can take you on a completely different path. It’s exciting, actually. To me, solving problems is a bit like a drug. You’re on it, and you can’t get off.